Zerobaseone is a South Korean boy band formed through Mnet's reality competition program Boys Planet and managed by WakeOne. The group consists of five members: Kim Ji-woong, Sung Han-bin, Seok Matthew, Kim Tae-rae, and Park Gun-wook. Originally a nine-piece ensemble, members Zhang Hao, Ricky, Kim Gyu-vin, and Han Yu-jin left the group in March 2026 following their contract expiration.